Iran public holidays in December 2026

December 2026 in Iran runs 31 calendar days, the depth of Northern-hemisphere winter and Southern-hemisphere summer. Iran does not observe any national public holidays in December 2026. Because all December 2026 holidays fall on the weekend (or there are none), every weekday remains a working day. That leaves 23 working days for Iran businesses, payroll cycles, and project schedules in December 2026. December centres on the Christmas long weekend in Christian countries and a cluster of solstice and winter-celebration days globally. For broader context, see the full 2026 calendar for Iran or the global view of holidays observed in December 2026 across all 190 countries we cover.